Face mask



FIG. 1 is a perspective view of a face mask showing the claimed design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a perspective view with the flap lifted upward.

CLAIM The ornamental design for a face mask, as shown and described.